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( NdModeL) 3 Sheets-Sheet 1. APOSENBRUOK REFRIGERATING MACHINE.

No. 375,188. Patented Dec. 20, 1887.

3 SheetsSheet 2.

(No Model.)

A. OSENBRUOK.

REFRIGERATING MACHINE.

m mwr. Wa'shinglum u. c,

3 Sheets-Sheet 3.

(No Model.)

A. OSENBRUGK.

REFRIGERATING MACHINE.

Paftgted Dec. 20, 1887.

W, Washington, D. c.

UNITED STATES PATENT OFFICE.

AUGUST osEnBEUoK, or HEMELINGEN, PRUSSIA, GERMANY.

REFRlGERATlNG-MACHINE.

SPECIFICATION forming part oi'Letter-s Patent No. 375,188, dated December 20,1887.

Application filed July 10, 1885. Serial No. 171,226. (No model.)

man Empire, have invented new and useful Improvements in Befrigerating-Machines, of which the following is a specification.

This invention relates to an apparatus intended for collecting and saving the refrigerr0 ating fluids or gases used in an ice-making or other refrigerating machine which are found to escape from certain parts of the apparatus, even when constructed with the utmost care and skill. It is particularly adapted for use with ice-machines of the condensing type,

wherein the ammoniacal vapor is converted into liquid form by pressure in a condensing cylinder or chamber. It is found almost impossible in such machines to so construct the stuffing-boxes surrounding the'sliding rods entering such chamber as to prevent leakage, and it is in connection with such an apparatus and to collect such waste or leakage of the refrigerating gas or fluid that I have illustrated 2 5 my invention and will hereinafter describe it.

Figu relis a diagrammaticillustration of my invention, parts thereof being shown in section. Fig. 2 is an enlarged sectional view of the change-valve. Fig. 3 is an enlarged sectional view of the stuffing-boxes of the compressor and a chargingcylinder connected therewith.

As my invention may be used in connection with any style of refrigerating apparatus, I

have not illustrated any such device, simply showing in the drawings one head, A, of a compressing-cylinder, forming part of the main refrigerating apparatus, to the end of which is secured the stuffing boxes A, for the 40 sliding rods entering therein'as the pistonrod Y and valve-rod X, Fig. 3, these latter parts being illustrated in Fig. 1 only sufficiently for an understanding of this invention, while in Fig. 3 they are shown in detail.

5 Communicating with these stuffing-boxes is a chamber, N, filled with some absorbing-liquid, wherein is collected any of the refrigerating liquids or gases that may escape from the condenser along the rods X or Y past the stuffingboxes. This charging'chamber N is in communication with a still, E, by two lines of pipe, that conducting the charged liquid to the stilland leading from the top of the charging-chamber N being designated by the numeral 2, and that returning the liquid from the still to the charging-chamber after it has been freed from the charge of gas being numbered 3.

To maintain a circulation of the absorbingliquid through pipes 2 and 3, the still, and the charging-chamber, a pump, as B, may be employed, it'being shown in the drawings as situated in pipe 2 between the charging-chamber and the still, although I do not wish to be limited to the position there shown.

D is a chamber forming part of the returnpipe 3, within which is arranged a worm, 1), formed in pipe 2. The chamber D receives the hot liquid shortly after it leaves the still, when it imparts some of its heat to the liquid in the worm on its way to the still, thereby raising its temperature in a corresponding degree to which its own temperatureis reduced.

1 is an expansion coil or other cooling de vice situated in the absorbingchamber N, and serving to reduce the temperature of the absorbing liquid containedtherein, in order to increase its power of taking up the waste gases and liquids.

Any suitable absorbing-liquid may be employed in chamber N, although I have found a hydrocarbon liquid known as oleo-naphtha, obtained from Nizhnee-Novgorod, Russia, to be well adapted therefor.

The charged liquid being impelled by a pump, B, or other motive power, passes through pipe 2 until it reaches the worm b, where its temperature is raised by the hot return liquid preparatory to its being discharged into the upper portion of the still. It is herein subjected to heat, which resultsin freeing it from the ammoniacal vapors with which it is charged, which, being set free, may be carried off by pipe 4 to the suction-pipe of the compressor or other desired point in the refrigerating apparatus. As the liquid becomes freed from its charge, it becomes heavier and gradually sinks to the bottom of the still, where it passes out through pipe 3 free from its charge. From the still it first passes into the chamber D, where it exchanges a portion of its high temperature for the lower temperature of the charged liquid flowing through worm b, as has been described; thence it passes to any desired form of cooler, as that indicated at F, and back to the charging-chamber, entering the lower portion thereof, where its temperature is sufficientl y lowered by coil 1 to prepare it for again absorbing the wasterefrigerating liquid or gas.

I will now describe the construction of stuffing-boxes surrounding rods X Y, which I prefer to employ, reference being had to Fig. 3.

L M indicate the necks of the stuffing-boxes of the piston-rod and slide-rod, respectively, situated between the compressor and the chamber N, they containing the usual packing material which surrounds the rods, and is held under suitable compression therein by the glands a b, surrounding the rods Y X, and which are adjustable thereon by means of the screws 9 c and suitable nuts thereon, as will be understood without further explanation. The interior of glands a b are chambered, as at e f, the walls of the chambers being provided with radial apertures,these chambers and apertures serving to permit any of the volatile refrigerating material which may possibly escape past the stuffing-boxes in necks L M to pass into the chamber N, where it will be absorbed by the liquid contained therein and circulating through the same. This absorbingfiuid is prevented from escape along glands a b, or the sliding rods Y X, by means of glands O P and d d, adjustable independently of each other, and of the glands at by means of the nuts bearing against the same and moving upon screw-rods g c, as will be understood by reference to the drawings.

indicates a change valve, situated in the pipes 2 and 3, between the still and chargingchamber, when the latter is open to iheatmosphere, this valve serving to prevent the pressure in the still upon the absorbing liquid therein from blowing the same out into the atmosphere and preventing the working of the apparatus. This valve is represented in detail in Fig.2, to which reference is now made. It consists of valves H I, which are retained upon their seats by springs b surrounding the stems C of the valves. The valve I is-situated in passage 2 and serves to close it, when forced upon its seat, against passage of liquid from the charging-chamber to the still. The valve H is situated in passage 3, and closes it against the passage from the still to the charging-chamber. The upper ends of the valvestems O O bear, respectively, against the opposite ends of a rock-lever, X, the arrangement thereof and of the springs 12 being such that the valves will be opened and closed simultaneously. The action of the pump forcing the liquid through pipe 2 against the valve I, serves to raise the latter, opening the passage closed thereby, and hence, through the valve-stems and rock-lever, also opening the passage in pipe 3, closed by the valve H. Com: mnnication will thus be established between the charging-chamber and the still,which will be maintained so long as the pump as in operation. Should this operation, however, from any cause cease, the pressure of springs b and of the liquid under pressure from the still on the face of valve H will result in closing both passages 2 and 3, and thus prevent the liquid from being forced out by the pressure in the still.

The tension of the springs b is adjustable by means of movable collars b".

It will be understood that when a receiver, N, for the absorbing-fluid, which is hermetically sealed, is employed, a change-valve such as just described need not be used.

I do not wish to be limited to the exact arrangement of parts shown, or to all the details of construction illustrated and described, as they may be modified to a certain extent with out departing from the spirit of my invention.

What I claim is- 1. In combination with a compressor-cylinder or equivalent part of a refrigerating apparatus having a moving rod extending therefrom, a stuffing-box for said rod, the gland whereof is chambered, as at e, and provided with apertures, a chamber containing an ab sorbing-liquid communicating through said apertures with the chambered gland,whereby any gas or liquid which may pass the stuffingbox will be absorbed by the liquid in the cham her, and a still and communicating-pipes between the still and chamber, substantially as described.

v 2. In combination with a compressor-cylinder or equivalent part of a refrigerating apparatus and a sliding rod, Y, extending therefrom, a stuffing-box consisting of a neck, L, and a gland, a, the latter being chambered, as at e, and provided with apertures, a chamber, N, containing an absorbing-fluid communicating with said chamber 6 through the apertures, a gland, O, surrounding gland a on the side of the chamber N, opposite the neck L, another gland, b, surrounding the shaft beyond the gland O, and forming with the end of gland a a stuffing-box, a screw-threaded rod, 9, and nuts thereon bearing, respectively, against glands O a d, whereby they are separately and independently adjustable, substantially as set forth.

3. The combination of a still, an absorbing chamber, communicating circulating pipes between the still and absorbing chamber, a pump for maintaining a circulation through thesame, and a valve situated in the retu rn-pipe from the still to the absorbing-chamber, normally held closed and adapted to be forced from its seat when the pump is in operation, substantially as set forth.

4. The combination of a still, an absorbingchamber communicating therewith, communieating-pipes 2 3 between the same, a pump for maintaining circulation through the pipes,

still, and chamber, valves I H, adapted to In testimony whereof I havesigne d my name close said pipes, respectively, a spring for to this specificationin the presence of two subclosing said valves when the pump is not in scribing witnesses.

operation, and a connection between said AUGUST OSENBRUOK. valves, as rock bar X, whereby they are simul- Witnesses:

taneously opened or closed, substantially asset G. H. BRUNO, J12,

forth. HEIN BEHRENS. 

